class_docstr: Sanity tests for Slateq algorithm.
code: def tearDown(self):
      ray.shutdown()
  
file_path: ray/rllib_contrib/slate_q/tests/test_slate_q.py
imports: import unittest
  import rllib_slate_q.slate_q.slateq
  from rllib_slate_q.env.recommender_system_envs_with_recsim import InterestEvolutionRecSimEnv
  import ray
  from ray.rllib.utils.test_utils import check_compute_single_action, check_train_results, framework_iterator
label_desc: Use image node_id 2 for calling the TestSlateQ obj's underlying member method code with example usage: obj.tearDown() without return types